package com.sky.service.impl;

import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //其他属性赋值
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        //调用Mapper层进行SQL语句插入
        employeeMapper.insert(employee);


    }

    @Override
    public PageResult pageQuary(EmployeePageQueryDTO employeePageQueryDTO) {

        PageResult pageResult = new PageResult();
        pageResult.setPageNo(employeePageQueryDTO.getPageNo());
        pageResult.setPageSize(employeePageQueryDTO.getPageSize());
        //通过公式拿去 start
        int start = (employeePageQueryDTO.getPageNo() - 1) * employeePageQueryDTO.getPageSize();

        int count = employeeMapper.countByCondition(employeePageQueryDTO);
        List<Employee> employList = employeeMapper.queryPage(employeePageQueryDTO.getName(),start,pageResult.getPageSize());

//        List<PageResult> result = new LinkedList<>();
//        BeanUtils.copyProperties(employList,result);
        pageResult.setRecords(employList);
        pageResult.setTotal(count);
        return pageResult;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
//第二种方法
//        Employee employee1 = Employee.builder()
//                .id(id)
//                .status(status)
//                .build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        //可以把回显的密码加密加强安全性
        //employee.setPassword("*******");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);

    }

    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {
        Employee employee = new Employee();
        employee.setId(passwordEditDTO.getEmpId());
        Employee employee1 = employeeMapper.getById(passwordEditDTO.getEmpId());
        String str1 = employee1.getPassword();
        String str2 = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        if(str1.equals(str2)){
            employee.setPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
            employeeMapper.update(employee);
        }

    }


}
